Automatic Water Pump Controller

Water is the basic need and it is one of the most important necessities for all living beings. Hence, it is of utmost importance to preserve water. In many houses and offices there is unnecessary wastage of water due to overflow in overhead tanks.Here we Introduce an Automatic water pump controller using Arduino and Ultra sonic sensor which use to turn on/off of water pump.

Here we use HC-SR04 Ultra sonic sensor which we define the measurements of the tank which is our water storage tank. The sensor gives the measurement of length of the tank is 120cm or 110cm then starter is On Condition and the length of the tank is less than 5cm then motor Off Condition.

connect sensor and Relay to the arduino and connect the Relay1 to start button of the starter and connect relay2 to stop button of the starter.

Note:

From the connection Picture i am choosen two Pushbuttons instead of Starter Start/Stop buttons.

int echoPin = 12; //Define Echo pin
int trigPin = 13; // Define Trig pin

int Relay = 2;

int Relay2 = 4;

int motorOn = 0;

int powerOn=0;

long duration, cm; //Define variables

int height=122; //define depth of tank in cm

void setup()

{

digitalWrite(Relay, HIGH);

digitalWrite(Relay2, HIGH);

Serial.begin (9600);

pinMode(trigPin, OUTPUT); //Define output pin

pinMode(echoPin, INPUT); //Define input pin

pinMode(Relay,OUTPUT); //Define output pin

pinMode(Relay2,OUTPUT);

delay(2000);

powerOn=1;

}

void loop()

{

if(powerOn==1)

{

delay(900000);

}

powerOn=0;

digitalWrite(trigPin, LOW);

delayMicroseconds(5);

digitalWrite(trigPin, HIGH);

delayMicroseconds(10);

digitalWrite(trigPin, LOW); // Read the signal from the sensor

duration = pulseIn(echoPin, HIGH); // convert time into a distance

// The speed of sound is 29.1 microseconds per centimeter.

cm= duration*0.034/2;

Serial.print(cm);

Serial.print("cm");

Serial.println();

if (cm<=120 && cm >= 100 && motorOn == 0) // water level is low

{

//Imitation of switch

digitalWrite(Relay, LOW); // Motor on

delay(15);//15 milli second

digitalWrite(Relay, HIGH);

motorOn = 1;

Serial.print("On");

}

else if (cm >=5 && cm <= 30) // water level is high

{

digitalWrite(Relay2,LOW);

delay(5000);

digitalWrite(Relay2, HIGH); // motor off

motorOn = 0;

Serial.print("Off");

}

delay(10000);

}

Microcontroller atmega 328p : 260
Relay : 3 relay module : 150

HC Sr 04 sensor : 120

Pcb : 50 Fuse : 2 * 20=40

Crystal =12

capacitors

microcontroller holder

Caution:

-->Be careful while doing work on Starter connections.